Can anyone help me with this?

(a)

--- Silicon

--- Tin

-- Lead

(b)

--- Silicon

--- Tin

--- Lead

Explanation:

Given

The attached table

Solving (a): The volume of each sample

For each element, the volume (v) is calculated as:

Where:

So, we have:

Silicon:

So, we have:

Tin:

So, we have:

Lead:

So, we have:

Solving (b): The density of each sample

For each element, the density (d) is calculated as:

Where

So, we have:

Silicon:

--- calculated in (a)

Density (d):

Tin:

--- calculated in (a)

Density (d):

Lead:

--- calculated in (a)

Density (d):

1. they vary with a higher number because boiling is way hotter than melting

the increase of protons   hope this